board: Add Orangepi Prime support

Add initial support for Orangepi Prime
board with below features:
- U-Boot 2017.11
- Linux 4.14
- Default packages from buildroot

Cc: zhaoyifan <zhao_steven@263.net>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
diff --git a/DEVELOPERS b/DEVELOPERS
index 99c598d..4351c3b 100644
--- a/DEVELOPERS
+++ b/DEVELOPERS
@@ -775,6 +775,7 @@
 F:	board/friendlyarm/nanopi-a64/
 F:	board/friendlyarm/nanopi-neo2/
 F:	board/olimex/a64-olinuxino/
+F:	board/orangepi/orangepi-prime/
 F:	board/orangepi/orangepi-win/
 F:	board/pine64/
 F:	configs/bananapi_m1_defconfig
@@ -782,6 +783,7 @@
 F:	configs/friendlyarm_nanopi_a64_defconfig
 F:	configs/friendlyarm_nanopi_neo2_defconfig
 F:	configs/olimex_a64_olinuxino_defconfig
+F:	configs/orangepi_prime_defconfig
 F:	configs/orangepi_win_defconfig
 F:	configs/pine64_defconfig
 F:	configs/pine64_sopine_defconfig